LINE BREVARD ORANGE COUNTY LINE, DAN BILLOW, WESH 2 NEWS. RIGHT NOW INVESTIGATORS ARE TRYING TO DETERMINE WHAT CAUSED AN ORLANDO HOUSE FIRE THAT LEFT ONE MAN DEAD. IT BROKE OUT JUST BEFORE 5:30 THIS MORNING AT THE HOME IN THE 1700 BLOCK OF ARLINGTON STREET. WESH 2'S MARINA MARRACO OFFICE THE SCENE AS ORLANDO POLICE INVESTIGATORS COMBED THROUGH THE BURNED OUT HOME. AN ARSON INVESTIGATION IS UNDERWAY FOLLOWING A DEADLY OVERNIGHT HOUSE FIRE IN THE CITY OF ORLANDO. THERE WERE SOME OFFICERS IN THE AREA IN THE DISTANCE. THEY SAW A GLOW OF WHAT THEY BELIEVE TO BE A FIRE. Reporter: THE CREWS ON THE SCENE SAY THE FLAMES HAD ALREADY GROWN TOO BIG TOO FAST TO SAVE ONE MAN WHO NEIGHBORS SAY HAD JUST RECENTLY BEEN SEEN USING A WHEELCHAIR. I WAS AFRAID OF THE FLAMES REACH THE TREE, AND THE TREE CAME TO THE HOUSE. Reporter: THOSE FLAMES GROWING UP TO 10 FEET OVER THE ROOF. WHERE THE VICTIM WAS FOUND IT WAS HEAVILY, HEAVILY DAMAGED. HEAVY FIRE WAS INVOLVED HE WAS HEAVILY CONSUMED IN THE FIRE. Reporter: IT TOOK 25 FIREFIGHTERS CLOSE TO 30 MINUTES TO PUT OUT THE BLAZE THAT RIPPED THROUGH THIS HOME. THE HEAVIEST IN THE FIRE IN THE REAR OF THE STRUCTURE. A FIRE THAT BURNED THROUGH THIS WATER HEATER MELTED AWAY THE WINDOW PANES AND TORE LEW MAJORITY OF THE HOUSE. THE PLACE APPEARS TO BE A MAKESHIFT PACK RAT-TYPE OF RESIDENCE. WHERE HAD YOU A LOT OF CAR PARTS, CERTAINLY FOR US TO WORK AROUND AND GET AROUND. Reporter: FOUR DOGS WERE IN THE HOME WHEN THE FIRE STARTED JUST BEFORE 6:00 THIS MORNING. CREWS TRIED SAVING ONE OF THE DOGS BUT IT TOO WAS LATE. O.P.D. OFFICER WERE ABLE TO TRACK DOWN ONE OF THE CANINES ANOTHER TWO STILL HAVEN'T BEEN FOUND. THE HOMICIDE DETECTIVES AND ARSON INVESTIGATORS WERE CALLED OUT TO PHOTOGRAPH THE SCENE AND CANVAS THE NEIGHBORHOOD WHENEVER THERE'S A DEATH IN THE FIRE WE CONDUCT IT AS A CRIMINAL INVESTIGATION WHETHER IT IS OR NOT. Reporter: INVESTIGATORS HAVE NOT SAID HOW LONG IT WILL BE BEFORE THEY CAN DETERMINE A CAUSE OF DEATH OR CAUSE OF FIRE. AT THIS POINT THE CITY OF ORLANDO, ARSON INVESTIGATEORS WILL BE MAKING THE FINAL DETERMINATION.